Sökning: "capacitor switching"

Visar resultat 21 - 25 av 29 avhandlingar innehållade orden capacitor switching.

  1. 21. A new Auxiliary Converter Topology with SiC Components for Railway Applications

    Författare :LUYU WANG; Industriell elektroteknik och automation; []
    Nyckelord :Auxiliary converter; Multilevel converter; ; Silicon Carbide transistors;

    Sammanfattning : Smaller size and lower weight are always the targets of the power electronic product development. This work introduces two new topologies of auxiliary converters which have the feature of fewer components and fewer number of energy conversion stages comparing with the conventional auxiliary converter used in railway applications. LÄS MER

  3. 22. Single Phase Active Power Factor Correction Converters - Methods for Optimizing EMI, Performance and Costs

    Författare :Supratim Basu; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Antenna Factor; Diode Recovery Time; Harmonic currents; EMI; Quasi Park; Snap Factor; PFC;

    Sammanfattning : In this thesis, front-end solutions with single-phase power factor correction (PFC) capability are studied. The reduction of current harmonics using various PFC techniques is investigated and related to the EN 61000-3-2 standard. LÄS MER

  4. 23. Battery Integrated Modular Multilevel Converter Topologies for Automotive Applications

    Författare :Arvind Balachandran; Lars Eriksson; Tomas Uno Jonsson; Torbjörn Thiringer; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Electric vehicles are rapidly developing in response to the need for increasing sustainable energy sources. The range and lifetime of an electric vehicle are limited by the battery pack. A pack comprises modules with several parallel and/or series-connected cells. LÄS MER

  5. 24. Design of Ultra-Low-Power Analog-to-Digital Converters

    Författare :Dai Zhang; Atila Alvandpour; Trond Ytterdal; Linköpings universitet; []
    Nyckelord :analog-to-digital converter; ADC; successive approximation register; SAR; SAR ADC; ultra-low-power; power consumption bounds; medical implant devices;

    Sammanfattning : Power consumption is one of the main design constraints in today’s integrated circuits. For systems powered by small non-rechargeable batteries over their entire lifetime, such as medical implant devices, ultra-low power consumption is paramount. LÄS MER

  7. 25. Main-circuit considerations of power coverters for integral motors

    Författare :Karsten Kretschmar; Hans-Peter Nee; Johan Walter; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronics; Permanent magnet integral motor; Small DC link; Elektronik; Electronics; Elektronik;

    Sammanfattning : This thesis deals with different converter topologies for a 15kW permanent magnet (PM) integral motor. An integral motor combines the motor and the power electronics in one unit. The main objective is to find suitable converter alternatives for an integral motor. LÄS MER